Finding the Fourth Proportional to 9,803.94, 13,528.72 and 5,555.08

Step by Step Solution

1. Step 1: Write the proportion equation
   9,803.94 : 13,528.72 = 5,555.08 : x
2. Step 2: Convert to fraction form
   9,803.94/13,528.72 = 5,555.08/x
3. Step 3: Cross multiply
   9,803.94x = 13,528.72 × 5,555.08
4. Step 4: Simplify right side
   9,803.94x = 75,153,145.75
5. Step 5: Solve for x
   x = 75,153,145.75/9,803.94
6. Step 6: Final answer
   x = 7,665.61